Newsflash, you have the certificate, someone signed you off. Where does it say one must prove they have the requirements twice, for another examiner or inspector to "inspect" twice?
What cause does an inspector have, or right to see your logbook other than to verify an endorsement, or currency, and proficiency. The regulations, as far as I know, do not say anywhere once you have completed the training you need to provide record of said training to keep your commercial, instrument, or private certificates.
If a FSDO wants to interpret it in such a way, then you should be good to go if that is where you are doing your training.
This is not a suggestion to do something that is less than legal, or dishonest. Just because you get an answer on the internet, doesn't mean it is 100% accurate. The examples you cited about, were out right lies, and falsely logged experience requirements. The one guy incriminated himself.
At this point though if I was the OP, I would not just go ahead and consider it "sole occupant that was a pilot." I would however suggest to someone that asked me to interpret the regulation that it did mean "sole occupant that was not a pilot." That is how I understand it. Since I am no authority, I wouldn't bet my career on *THIS GUYS* opinion, unless of course an FAA inspect, his FSDO, and your DPE all agreed.
Me personally, I did my initial commercial in a multi, so this does not apply. Giggity, giggity, goo.